Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

A+

FIX

REVIEW

PASS

INFO

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop

Performance

Accessibility

100

Best Practices

100

SEO

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.77 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

7.17 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

77 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.77 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

7.29 s

Page Load Progression

375 ms

750 ms

1.1 s

1.5 s

1.9 s

2.2 s

2.6 s

3.0 s

Checks

21 PASS 2 REVIEW

Page Weight Budget

1.1 MB transferred, 59 requests

REVIEW

1.1 MB transferred, 59 requests

Page weighs 1.5 MB (1.1 MB transferred)

59 HTTP requests

Estimated 0.22 g CO2 per page load

1.1 MB transferred

59 requests

0.22 g CO2 per page load

Images 826.9 KiB 76%

JavaScript 217.9 KiB 20%

CSS 17.1 KiB 2%

HTML 10.9 KiB 1%

Other 7.0 KiB 1%

Other 6.6 KiB 1%

Other 912 B 0%

Other 453 B 0%

0 2.4 MB 4.9 MB

Under budget

JS Execution Cost

Action

1823ms total JS execution

REVIEW

1823ms total JS execution

Unattributable: 908ms CPU time

https://lacia.life/: 518ms CPU time

https://lacia.life/assets/index-DoHyi94N.js: 396ms CPU time

Main Thread Breakdown

Other 53% Script Evaluation 25% Style & Layout 18%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	908ms	17ms	0ms	1st
https://lacia.life/	518ms	85ms	10ms	1st
https://lacia.life/assets/index-DoHyi94N.js	396ms	368ms	3ms	1st

A+

Third-Party Impact

1% third-party, 0 ms blocking

PASS

1% third-party, 0 ms blocking

Third-party code accounts for 1% of page weight (10.1 KiB of 1.1 MiB)

Third-party blocking time is low (0 ms)

99%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Image Optimization

5 images, 0 KB saveable

PASS

5 images, 0 KB saveable

All images are well-optimized

5 images 827 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

Font Loading

No web fonts (system fonts)

PASS

No web fonts (system fonts)

No web fonts loaded — system fonts are fastest

No web fonts loaded — system fonts are optimal.

A+

JS Bundles

44 scripts, 30 KB unused

PASS

44 scripts, 30 KB unused

https://lacia.life/assets/index-DoHyi94N.js: 30 KB unused (39%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 30 KB

30 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://lacia.life/assets/index-DoHyi94N.js	77 KB	30 KB (39%)	✓	1st
https://lacia.life/assets/react-SIfiwpqq.js	4 KB	—	✓	1st
https://lacia.life/assets/react-dom-x9LNwWQc.js	2 KB	—	✓	1st
https://lacia.life/assets/createServerFn-BeC4yHFw.js	12 KB	—	✓	1st
https://lacia.life/assets/link-5skObtIq.js	8 KB	—	✓	1st
https://lacia.life/assets/useMatch-BI2N-WL4.js	1 KB	—	✓	1st
https://lacia.life/assets/lazyRouteComponent-T-iC1a3V.js	2 KB	—	✓	1st
https://lacia.life/assets/jsx-runtime-0vZSBttN.js	1 KB	—	✓	1st
https://lacia.life/assets/Match-BEA91Y5m.js	2 KB	—	✓	1st
https://lacia.life/assets/sidebars-CwO9xs-u.js	24 KB	—	✓	1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

3 hints, 0 missing preconnects

PASS

3 hints, 0 missing preconnects

Page uses 3 resource hint(s)

Current Resource Hints

preconnect

—

preload

dns-prefetch

—

prefetch

—

3 resource hints configured

A+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

A+

Compression Algorithm

Main response uses brotli

PASS

Main response uses brotli

Main HTML response uses brotli (Content-Encoding: br)

Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML max-age=30 (≤ 5min) is appropriate

PASS

Main HTML max-age=30 (≤ 5min) is appropriate

Got: private, max-age=30, must-revalidate

A+

Server-Timing Observability

3 Server-Timing entries advertised

PASS

3 Server-Timing entries advertised

Server-Timing header advertises 3 timing entries

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Accept-Encoding

The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).

No `ETag` or `Last-Modified` -- conditional GET not supported

Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.

A+

Page Weight Inventory

59 resources · 1.1 MB · 30 KB savings available

PASS

59 resources · 1.1 MB · 30 KB savings available

Page weight 1.1 MB exceeds 1 MB target by 64 KB

Got: 1.1 MB Expected: ≤ 1 MB

1 third-party resources (1% of weight)

2 resources over 200KB

59 resources · 1.1 MiB · 1 third-party 63.8 KiB over 1MB target

Image 77% · 833.9 KiB

JavaScript 20% · 217.9 KiB

CSS 2% · 17.1 KiB

Document 1% · 10.9 KiB

Other 1% · 7.9 KiB

~30.0 KiB of savings available

Remove unused JavaScript: 30.0 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

59 resources			1.1 MiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

A+

JavaScript Blocking

No render-blocking JS or document.write usage detected

PASS

No render-blocking JS or document.write usage detected

No JavaScript blocking issues detected

A+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues detected

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

HTTP Caching

max-age=30 (30 seconds)

PASS

max-age=30 (30 seconds)

Cache-Control header is set

Got: private, max-age=30, must-revalidate

Effective TTL: 30 seconds (max-age=30)

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

private, max-age=30, must-revalidate

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy
max-age	30	Cache for 30 seconds
must-revalidate	—	Must recheck with server after expiry

Effective TTL: 30 seconds

Network Waterfall

59 requests over 2048ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

11 images, 823 KB total, 374 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

823 KB

Oversized

Wasted

374 KB

11 missing dimensions 1 missing lazy loading

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.